<template>
  <div class="cartcontrol">
    <transition name="move">
      <div class="cart-decrease" v-show="food.count > 0" @click.stop.prevent="decreaseCart">
        <span class="inner icon-remove_circle_outline"></span>
      </div>
    </transition>
    <div class="cart-count" v-show="food.count > 0">{{food.count}}</div>
    <div class="cart-add icon-add_circle" @click.stop.prevent="addCart"></div>
  </div>
</template>

<script>

export default {
  name: "cartcontrol",
  props: {
    food: {
      type: Object
    }
  },
  data() {
    return {

    }
  },
  components: {
  },
  methods: {
    addCart (event) {
      console.log(event)
      if (!event._constructed) { //如果不存在这个属性,则为原生点击事件，不执行下面的函数
        return
      }
      if (!this.food.count) {
        this.$set(this.food, 'count', 1)
      } else {
        this.food.count++
      }
      this.$emit('add', event.target)
    },
    decreaseCart () {
      if (!event._constructed) { //如果不存在这个属性,则为原生点击事件，不执行下面的函数
        return
      }
      if (this.food.count) {
        this.food.count--
      }
    }
  }
}
</script>

<style lang="stylus">
.cartcontrol 
  font-size 0
  .cart-decrease 
    display inline-block
    padding 6px
    opacity 1
    transform translate3d(0, 0, 0)
    .inner 
      display inline-block
      line-height 24px
      font-size 24px
      color rgb(0, 160, 220)
      transition all 0.4s linear
      transform rotate(0)
    &.move-enter-active, &.move-leave-active 
      transition all 0.4s linear
    &.move-enter, &.move-leave-active 
      opacity 0
      transform translate3d(24px, 0, 0)
      .inner 
        transform rotate(180deg)
  .cart-count 
    display inline-block
    vertical-align top
    width 12px
    padding-top 6px
    line-height 24px
    text-align center
    font-size 10px
    color rgb(147, 153, 159)
  .cart-add 
    display inline-block
    padding 6px
    line-height 24px
    font-size 24px
    color rgb(0, 160, 220)
</style>
